GB/T 31883-2015: Road vehicles -- Drawbar couplings, drawbar eyes, fifth wheel kingpins, hook couplings and toroidal eyes -- Wear limits for in-use mechanical couplings

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Scope

This Standard specifies the wear limit size and maximum allowable wear extent of the
in-use mechanical coupling; so that ensure the safe running of the heavy-duty vehicle
installed with such coupling.
This Standard is applicable to the following criteria mechanical couplings:
--- 40mm and 50mm drawbar couplings (ISO 3584:2001);
--- 40mm and 50mm drawbar eyes (ISO 8755:2001 and GB/T 4781-2006);
--- 50# and 90# fifth wheel kingpins (GB/T 4606-2006 and GB/T 4607-2006);
--- Hook couplings and toroidal eyes (ECE R55, Rev.1:2001).

Basic Data

Standard ID	GB/T 31883-2015 (GB/T31883-2015)
Description (Translated English)	Road vehicles -- Drawbar couplings, drawbar eyes, fifth wheel kingpins, hook couplings and toroidal eyes -- Wear limits for in-use mechanical couplings
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	T70
Classification of International Standard	43.080.10
Word Count Estimation	12,123
Date of Issue	2015-09-11
Date of Implementation	2015-12-01
Quoted Standard	GB/T 4606-2006; GB/T 4607-2006; GB/T 4781-2006; ISO 3584-2001; ISO 8755-2001; ECE R55-2001
Adopted Standard	ISO/TS 20825-2003, MOD
Regulation (derived from)	National Standard Announcement 2015 No.25
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This Standard specifies the use of the mechanical connection of the wear limit the size and the maximum allowable wear amount, in order to ensure the installation of the connector of heavy vehicles driving safety. This Standard applies to the following standard mechanical connectors: 40mm and 50mm tow fittings (ISO 3584-2001); 40mm and 50mm drawbar holes (ISO 8755-2001 and GB/T 4781-2006); No. 50 and No. 90 draw Block Kingpins (GB/T 4606-2006 and GB/T 4607-2006); the hook and loop holes (ECE R55, Rev. 1: 2001).